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# MONOLITHIC SYSTEMS, INC. (COLORADO MSI)
MICROPAQ 452
+------------------------------------------------------------+
|------------------------------------------------------------|
| Data bus: | 16-bit ISA |
|--------------------------+---------------------------------|
| Size: | Full-length, Full-height card |
|--------------------------+---------------------------------|
| Hard drive supported: | 2 IDE(AT) interface drives |
|--------------------------+---------------------------------|
| Floppy drives supported: | 360KB, 720KB, 1.2MB, 1.44MB |
+------------------------------------------------------------+
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|-----------------------------------------------+------------|
| 40-pin IDE(AT) interface connector | J1 |
|-----------------------------------------------+------------|
| 34-pin control cable connector - floppy drive | J2 |
|-----------------------------------------------+------------|
| 25-pin parallel port - internal | J3 |
|-----------------------------------------------+------------|
| 9-pin serial port 1 - internal | J4 |
|-----------------------------------------------+------------|
| 9-pin serial port 2 - internal | J5 |
|-----------------------------------------------+------------|
| 4-pin connector - drive active LED | J6 |
|-----------------------------------------------+------------|
| VGA feature connector | J7 |
|-----------------------------------------------+------------|
| EGA feature connector | J11 |
|-----------------------------------------------+------------|
| 15-pin analog video port | J13 |
|-----------------------------------------------+------------|
| 15-pin digital video port | J21 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|---------------------------------------+----------+---------|
| » | IDE(AT) interface pin 34 grounded | J10 | closed |
|---+-----------------------------------+----------+---------|
| | IDE(AT) interface pin 34 not | J10 | open |
| | grounded | | |
|---+-----------------------------------+----------+---------|
| » | Floppy drive interface | J12 | open |
| | precompensation is 125ns | | |
|---+-----------------------------------+----------+---------|
| | Floppy drive interface | J12 | closed |
| | precompensation is 187ns | | |
|---+-----------------------------------+----------+---------|
| » | IDE(AT) interface enabled | J14 | open |
|---+-----------------------------------+----------+---------|
| | IDE(AT) interface disabled | J14 | closed |
|---+-----------------------------------+----------+---------|
| » | On-board video adapter enabled | J15 | closed |
|---+-----------------------------------+----------+---------|
| | On-board video adapter disabled | J15 | open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS(CONTINUED) |
|------------------------------------------------------------|
| Function | Location | Setting |
|------------------------------------+----------+------------|
| » | Floppy drive interface | J16 | closed |
| | interrupt IRQ6 enabled | | |
|---+--------------------------------+----------+------------|
| | Floppy drive interface | J16 | open |
| | interrupt IRQ6 disabled | | |
|---+--------------------------------+----------+------------|
| » | Single speed floppy drive | J17 | open |
|---+--------------------------------+----------+------------|
| | Dual speed floppy drive | J17 | closed |
|---+--------------------------------+----------+------------|
| » | 16-bit mode enabled | J18 | open |
|---+--------------------------------+----------+------------|
| | 8-bit mode enabled | J18 | closed |
|---+--------------------------------+----------+------------|
| » | Floppy disk change signal | J19 | closed |
| | enabled | | |
|---+--------------------------------+----------+------------|
| | Floppy disk change signal | J19 | open |
| | disabled | | |
|---+--------------------------------+----------+------------|
| » | Monitor type select color | J20 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+----------+------------|
| | Monitor type select monochrome | J20 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | VGA clock enabled | J22 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+----------+------------|
| | Feature clock enabled | J22 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | Floppy drive interface enabled | J23 | closed |
|---+--------------------------------+----------+------------|
| | Floppy drive interface | J23 | open |
| | disabled | | |
|---+--------------------------------+----------+------------|
| » | IDE(AT) interface interrupt | J24 | closed |
| | IRQ14 enabled | | |
|---+--------------------------------+----------+------------|
| | IDE(AT) interface interrupt | J24 | open |
| | IRQ14 disabled | | |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | S4/6 | N/A |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO DISPLAY CONFIGURATION |
|------------------------------------------------------------|
| Primary | Alternate | J20 |S4/1|S4/2|S4/3|S4/4|S4/5|
|-------------+------------+--------+----+----+----+----+----|
| MDA | EGA w/CD |pins 1 &| on | on | on | on |off |
| | 40x25 | 2 | | | | | |
|-------------+------------+--------+----+----+----+----+----|
| MDA | EGA w/CD |pins 1 &|off | on | on | on |off |
| | 80x25 | 2 | | | | | |
|-------------+------------+--------+----+----+----+----+----|
| MDA |EGA w/ED 200|pins 1 &| on |off | on | on |off |
| | ln | 2 | | | | | |
|-------------+------------+--------+----+----+----+----+----|
| MDA |EGA w/ED 350|pins 1 &|off |off | on | on |off |
| | ln | 2 | | | | | |
|-------------+------------+--------+----+----+----+----+----|
| CGA 40x25 | EGA w/MD |pins 2 &| on | on |off | on |off |
| | | 3 | | | | | |
|-------------+------------+--------+----+----+----+----+----|
| CGA 80x25 | EGA w/MD |pins 2 &|off | on |off | on |off |
| | | 3 | | | | | |
|-------------+------------+--------+----+----+----+----+----|
| EGA w/CD |MDA or none |pins 1 &| on |off |off | on |off |
| 40x25 | | 2 | | | | | |
|-------------+------------+--------+----+----+----+----+----|
| EGA w/CD |MDA or none |pins 1 &|off |off |off | on |off |
| 80X25 | | 2 | | | | | |
|-------------+------------+--------+----+----+----+----+----|
|EGA w/ED 200 |MDA or none |pins 1 &| on | on | on |off |off |
| ln | | 2 | | | | | |
|-------------+------------+--------+----+----+----+----+----|
| EGA w/ED |MDA or none |pins 1 &|off | on | on |off |off |
| 350ln | | 2 | | | | | |
|-------------+------------+--------+----+----+----+----+----|
| EGA w/MD |CGA 40x25 or|pins 2 &| on |off | on |off |off |
| | none | 3 | | | | | |
|-------------+------------+--------+----+----+----+----+----|
| EGA w/MD |CGA 80x25 or|pins 2 &|off |off | on |off |off |
| | none | 3 | | | | | |
|-------------+------------+--------+----+----+----+----+----|
|All VGA modes| N/A | N/A | on |N/A |N/A |N/A |N/A |
|------------------------------------------------------------|
|Note: All pins designated should be placed in the closed |
|position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT CONFIGURATION |
|------------------------------------------------------------|
| LPT | IRQ | S2/1 | S2/2 | S2/3 | S2/4 | S2/5 | S2/6 |
|----------+------+-------+------+------+------+------+------|
|»| 1 | IRQ7 | on | off | off | N/A | off | on |
|-+--------+------+-------+------+------+------+------+------|
| | 2 | IRQ5 | off | on | off | N/A | on | off |
|-+--------+------+-------+------+------+------+------+------|
| | 3 | IRQ7 | off | off | on | N/A | off | on |
|-+--------+------+-------+------+------+------+------+------|
| |Disabled| N/A | off | off | off | N/A | off | off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PRIMARY SERIAL PORT CONFIGURATION |
|------------------------------------------------------------|
| Port 1 (J4) | IRQ | S1/1 | S1/2 | S1/3 | S1/4 |S1/5 |S1/6 |
|-------------+------+------+------+------+------+-----+-----|
|» | COM1 | IRQ4 | on | off | off | off | off | on |
|--+----------+------+------+------+------+------+-----+-----|
| | COM2 | IRQ3 | off | on | off | off | on | off |
|--+----------+------+------+------+------+------+-----+-----|
| | COM3 | IRQ4 | off | off | on | off | off | on |
|--+----------+------+------+------+------+------+-----+-----|
| | COM4 | IRQ3 | off | off | off | on | on | off |
|--+----------+------+------+------+------+------+-----+-----|
| | Disabled | N/A | off | off | off | off | off | off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ALTERNATE SERIAL PORT CONFIGURATION |
|------------------------------------------------------------|
| Port 2 (J5) | IRQ | S3/1 | S3/2 | S3/3 | S3/4 |S3/5 |S3/6 |
|-------------+------+------+------+------+------+-----+-----|
|» | COM2 | IRQ3 | off | on | off | off | on | off |
|--+----------+------+------+------+------+------+-----+-----|
| | COM1 | IRQ4 | on | off | off | off | off | on |
|--+----------+------+------+------+------+------+-----+-----|
| | COM3 | IRQ4 | off | off | on | off | off | on |
|--+----------+------+------+------+------+------+-----+-----|
| | COM4 | IRQ3 | off | off | off | on | on | off |
|--+----------+------+------+------+------+------+-----+-----|
| | Disabled | N/A | off | off | off | off | off | off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IOCHRDY |
|------------------------------------------------------------|
| Setting | J8 | J9 |
|--------------------------------------+----------+----------|
| » | IOCHRDY signal comes from pin 21 | open | closed |
|---+----------------------------------+----------+----------|
| | IOCHRDY signal comes from pin 27 | closed | open |
+------------------------------------------------------------+